Journal of Isfahan Dental School

Comparison of the Marginal Fit of Heat Pressed Crowns Fabricated With 3D Printed and Conventional Methods

Document Type : مقاله‌های پژوهشی

Authors

1 Graduated of Dentistry, School of Dentistry, Islamic Azad University Isfahan (Khorasgan) Branch, Isfahan, Iran

2 Assistant Professor, Department of Prosthetic Dentistry, School of Dentistry, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran

3 Postgraduate Dentistry, Department of Prosthetic Dentistry, School of Dentistry, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran

Abstract

Introduction: Marginal adaptation is one of the key factors in the success of dental crowns. It is necessary to identify marginal adaptation in order to determine the spacing and prevent the onset of diseases. This study sought to use 3D and manual printing methods aiming at manufacturing heat press full-coverage extra-coronal restorations with more marginal adaptation.
Materials & Methods: This study was conducted in the year 1397-98 at the Islamic Azad University of Isfahan using descriptive-analytical and cross-sectional method with 20 samples. Ten samples were evaluated using a 3D printing method, and ten samples were assessed by manual wax-up technique. Results were analyzed using Kruskal-Wallis and Mann-Whitney tests.
Results: There was a significant difference between the restoration space and the marginal edges in eight parts of the teeth in the manual method (p value < 0.001). The marginal edge space in the eight parts of the tooth was not significantly different in the 3D print method (p value = 0.614). A significant difference was observed in restoration space and the marginal edge between 3D printing and manual techniques (p value < 0.001).
Conclusion: The compatibility of the complete outer crowns of the heat press in the 3D printing method was not significantly different from the manual waxing method.
Key words: Dental marginal adaptation, Crowns, Prosthodontics.

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Journal of Isfahan Dental School
Volume 18, Issue 1 - Serial Number 1
April 2022
Pages 33-41